Purpose
If you are unable to log in to SQL Monitor with your AD credentials, this will help you disable AD authentication.
Requirements
You will need sufficient permissions to update the SQL Monitor repository.
Steps
In SSMS, run the following query against the SQL Monitor repository:
UPDATE [RedGateMonitor].[settings].[KeyValuePairs]
SET [RedGateMonitor].[settings].[KeyValuePairs].[KeyValue] = 0
WHERE [RedGateMonitor].[settings].[KeyValuePairs].[KeyName] = 'ActiveDirectory-Enabled'
You will then need to restart the SQL Monitor BaseMonitor.
See also
https://documentation.red-gate.com/sm/troubleshooting/error-messages/can-t-connect-to-active-directory-authentication-service